Walkthrough 1 - Medium

Step 1

1				6			2
			3			8
	4				5	6		9
3							6
		8				1
	5							7
2			8				3
		5			1
	9			5				6

Looking at the grid we can see that in the top right corner the sixes in boxes 2, 6 and 9 mean the 6 can only go in the bottom left hand box

Click here for Step 2